What Is a Topical Map in SEO?

A topical map is a plan of every page a website needs to cover a subject properly, showing what each page is for, which search intent it owns and how the pages link together. It turns a pile of keywords into a structure you can build, review and measure.

You’ll hear it mentioned alongside “topical authority”. That phrase comes from the SEO community rather than from Google, so it’s worth knowing what’s established and what’s theory before you spend weeks on a spreadsheet.

What Does a Topical Map Contain?

A topical map lists the subject’s boundaries, the hubs and pages beneath them, and for every page its target query, search intent, owner URL and status.

Think of it as a spreadsheet with one row per page. Each row answers a short set of questions: what is this page for, who is it for, and where does it sit?

The core topic and its borders

Start with one sentence on what the site is about and who it’s for. That sentence decides what belongs on the map and what doesn’t.

A boiler installer’s map includes servicing and repair. It doesn’t include a guide to heat pump grants unless the business installs heat pumps.

Hubs, supporting pages and page roles

A hub covers a subtopic broadly and links down to supporting pages that each answer one narrower question. The core topic page sits above the hubs and links to all of them.

Give each page a role. Typical roles are a service page that sells, a guide that explains, a comparison that helps a decision and a tool or calculator.

The columns that make it usable

A working map usually carries these columns:

• Hub. The subtopic the page belongs to.
• Target query. The main search the page answers.
• Intent. Commercial, informational, comparison or navigational.
• Owner URL. The one page that owns this intent, even if it doesn’t exist yet.
• Status. Live, needs updating, or to write.
• Priority. How close the page sits to revenue.

How Is a Topical Map Different From a Keyword List?

A keyword list records what people search. A topical map decides which pages answer those searches, in what order, and how they connect.

A keyword list is flat. It might say “boiler repair cost”, “boiler service price” and “how often to service a boiler”, with volumes beside each, but it doesn’t tell you whether that’s one page, three pages or a hub with two supporting articles.

	Keyword list	Topical map
Unit	A search term	A page with a purpose
Structure	Flat	Hierarchy of hubs and supporting pages
Intent	Often ignored	Assigned to every page
Overlap	Not checked	Resolved before writing
Links	Not covered	Planned between pages

How it differs from a sitemap and a content calendar

A sitemap lists the pages that exist today. A content calendar says when pages will be written and published.

The topical map sits above both. It says which pages should exist, and the sitemap and calendar follow from it.

What Has Google Said About Topical Authority?

Google has described a “topic authority” system, but in the context of news results. It hasn’t published a general topical authority score for web search.

On Tuesday 23 May 2023, Jen Granito, a Group Product Manager in Search, published Understanding news topic authority on the Google Search Central blog. It describes a system that helps determine which expert sources suit someone’s newsy query in specialised areas such as health, politics or finance.

What the 2023 post says

The post lists three prominent signals: how notable a source is for a topic or location, influence and original reporting, and source reputation. Its advice to publishers is to do what they’d normally do and provide great coverage about the areas and topics they know well.

That’s a statement about news sources. It doesn’t mention web search in general, topical maps or site structure.

What the ranking systems guide shows

Search Engine Roundtable reported on 24 May 2023 that Google’s SearchLiaison account said this wasn’t a new system and had been used for several years. It also reported the account saying the system would be added to Google’s ranking systems page in the near future.

Google’s guide to ranking systems was last updated on 10 December 2025, and we read it on 3 October 2026. It lists systems such as local news and reliable information, but not one called topic authority.

What the 2024 leak does and doesn’t show

In May 2024, a leak of internal Google Content Warehouse API documentation drew wide attention. Mike King’s analysis on iPullRank, published on 28 May 2024, reads two entries in it as measures of topical focus: a site focus score for how much a site sticks to one topic, and a site radius for how far a page strays from it.

On 29 May 2024, The Verge reported that Google confirmed the documents were authentic. It quoted a Google spokesperson cautioning against “inaccurate assumptions about Search based on out-of-context, outdated, or incomplete information”, and noted that the documents don’t reveal how elements are weighted.

Where that leaves a topical map

Google’s people-first content guidance does list publishing lots of content on many different topics, in the hope some of it performs, as a warning sign. It also warns against entering a niche topic without any real expertise, mainly because you thought it would bring traffic.

So the defensible position is this: covering a subject you know well, without gaps or duplicates, matches what Google says it wants. Whether that builds a measurable sitewide “authority” score is an industry hypothesis, so don’t promise it to a client as a guarantee.

How Do You Build a Topical Map Step by Step?

Pick one subject you can speak about with real expertise, gather the questions people ask, group them by intent, give each group one page, then plan the hierarchy and the links.

1. Choose the core topic and its borders

Write one sentence: this site helps [who] do [what] about [topic]. If the topic is so broad that a competitor with 50 pages couldn’t cover it well, narrow it until they could.

2. Collect the queries

Use your own Search Console data first. The Performance report in Search Console shows the queries your site already appears for, grouped by Queries and Pages.

Add keyword tools, People Also Ask, forums, your own site search and the questions your sales team hears on calls. If you’re starting from nothing, our SEO work includes this research.

3. Group by intent, not by shared words

Put queries that need the same answer together. If the top results for two queries are mostly the same pages, they probably belong on one page of yours.

“Standing desk” and “standing desk benefits” share words but need different pages: one is a shopping query, the other is informational.

4. Give every group one owner URL

Write the target URL beside each group, including pages that don’t exist yet. Two pages chasing the same intent split your links and make it unclear which one should rank.

5. Assign a page type and a job

Decide whether each group needs a service page, a guide, a comparison or a tool. Write one line on what the reader should be able to do afterwards.

6. Build the hierarchy

Place each page under a hub, and in our experience three or four levels is enough for most sites. If one hub ends up with 15 or more pages beneath it, check whether it’s hiding a second hub.

7. Plan the links and the build order

Decide which pages link to which before anything is written. Then set a build order, starting with the pages closest to revenue.

What Does a Topical Map Look Like in Practice?

It’s a table with one row per page, showing the hub it belongs to, the query it answers, the intent behind it and where it stands.

Here’s a short example for a fictional business, Brightside Boilers, a boiler installer serving Bristol. The business, the queries and the statuses are invented for illustration.

Hub	Page	Target query	Intent	Status
Boiler installation	Boiler installation in Bristol	boiler installation bristol	Commercial	Live, needs updating
Boiler installation	How much does a new boiler cost?	new boiler cost	Informational	To write
Boiler installation	Combi or system boiler?	combi vs system boiler	Comparison	To write
Boiler servicing	Annual boiler service	boiler service bristol	Commercial	Live
Boiler servicing	What happens in a boiler service?	what does a boiler service include	Informational	To write
Boiler repair	Emergency boiler repair	boiler repair bristol	Commercial	Live
Boiler repair	Why is my boiler losing pressure?	boiler losing pressure	Informational	To write

Why “installation” and “installation cost” are separate rows

One is someone ready to book, the other is someone budgeting. Different intents need different pages, even when the words overlap.

What you can read from the table

Every commercial page has informational pages feeding it, and the “to write” rows show the gaps. Build the commercial pages first, then the guides that support them.

Want a map built around the pages that earn you revenue? Talk to us about content marketing.

How Should You Link the Pages in a Topical Map?

Link each supporting page up to its hub, link the hub down to its supporting pages, and link sideways where a reader would naturally want the next answer.

Google’s link best practices say links should be crawlable <a> elements with an href. They also say good anchor text is descriptive, reasonably concise and relevant to both the page it sits on and the page it points to.

Internal linking rules worth keeping

The same page says every page you care about should have a link from at least one other page on your site. It also says there’s no ideal number of links per page, and that if you think it’s too many, it probably is.

• Link up, down and sideways, but only where it helps the reader.
• Use descriptive anchors such as “boiler service cost”, never “click here”.
• Vary the wording naturally, because ten identical anchors look engineered.

Why anchors matter more in a map

The links are how the structure becomes visible to a crawler and a reader. A map that isn’t reflected in the internal links is just a spreadsheet.

Related: What Is E-E-A-T and How Do You Demonstrate It?

How Do You Avoid Keyword Cannibalisation?

Give every search intent exactly one page, and merge or redirect pages that compete for the same one.

Keyword cannibalisation isn’t a Google term. It’s the SEO name for several of your pages targeting the same intent, so none of them stands out.

Why a third near-identical page has nowhere to go

Google’s site diversity system generally won’t show more than two web page listings from the same site in its top results, though it may show more when it judges that especially relevant. That’s described in the same ranking systems guide.

How to spot it

In Search Console, filter the Performance report to one query, then switch to the Pages tab. If two or three of your URLs swap places over time for the same query, you’ve probably got overlap.

How to fix it

Google’s canonicalization documentation says some duplicate content is normal and isn’t a spam policy violation. But when two pages serve one purpose, merge the weaker into the stronger, redirect the old URL and update your internal links.

Related: How Do You Migrate a Website Without Losing Rankings?

Should You Map a New Site Differently From an Existing One?

Yes. A new site maps from zero and starts with money pages, while an existing site needs an audit first, because the work is merging, redirecting and filling gaps.

Mapping a brand-new site

With no content and no data, start with the pages that make money, then add the informational pages that feed them. Scope the first version to what you can publish in about six months, because a 300-page map is useless if you can ship four posts a month.

Mapping a site that already has content

Export every URL with its clicks, impressions and main queries from Search Console, then place each one on the map. You’ll find overlaps, and the usual result is fewer, stronger pages.

If two pages compete and both get traffic, merge into the stronger URL and redirect the other. An SEO audit does this inventory properly: ours is a written report of around 30 pages plus a 90-minute consultation.

Special cases: local, ecommerce and multilingual sites

Local businesses should map only the places they genuinely serve, with unique content for each. Ecommerce sites should map categories and buying guides, and keep filter URLs off the map.

Multilingual sites need a separate map per language, built from queries in that language. A translated English map misses how people actually search.

Where to start (our view)

This table is our practitioner judgement, not a Google recommendation.

Your situation	Start with
New local service business	Service pages, then one guide hub per service
New content site	One hub and all its supporting pages before a second hub
Existing site, flat traffic	Audit, merge overlaps, then fill gaps
Existing ecommerce site	Category pages first, buying guides second

How Do You Know If a Topical Map Is Working?

Judge it by what happens to the pages on the map: impressions, rankings, clicks and leads. Nobody outside Google can read a topical authority score.

Measure the pages, in Search Console

The Performance report gives clicks, impressions, click-through rate and average position by query and page. Compare the pages in each hub before and after you publish.

Pair it with conversion data, because a page that ranks but doesn’t convert is a content problem rather than a coverage problem. Google’s SEO Starter Guide says changes can take a few hours or several months, and suggests waiting a few weeks before judging the result: see how long SEO takes.

Try topic share as a proxy

Kevin Indig proposes measuring topical authority as “Topic Share”, the share of traffic a site gets from the keywords within a topic, compared with competitors. His method, published on 20 May 2025, uses a keyword tool to pull every keyword for a topic and then compares traffic share by domain.

It’s a practical proxy, not a Google metric. Treat the result as a comparison with competitors, not as a score.

Test changes where you can

Rankings move for many reasons. At Utterly Digital we test ranking factors in single-variable experiments, which is the only way to separate a map’s effect from everything else that changed.

Does a Topical Map Help With AI Search?

It can help, because AI features draw on the same SEO fundamentals, but Google says there are no extra requirements and no special markup.

What Google says about AI features

Google’s AI features guidance says the best practices for SEO remain relevant for AI Overviews and AI Mode. It lists making content findable through internal links and says you don’t need new machine-readable files or special schema to appear.

Why coverage matters more here

The same page says AI Overviews and AI Mode may use a “query fan-out” technique, issuing multiple related searches across subtopics to build a response. A site that answers the related questions on a subject has more to offer each of those searches.

That’s an inference from Google’s description, not a confirmed ranking mechanism. For the practical side, see our AI search work.

Related: What Is Generative Engine Optimisation (GEO)?

How Do You Keep a Topical Map Up to Date?

Review it when your services change, when Search Console shows queries you don’t cover, and at least once a year, and prune before you expand.

What to review

Check each hub for gaps, overlaps and pages that no longer earn their place. Look at queries in Search Console that bring impressions to pages that weren’t built for them.

When to consolidate or remove

If a page is thin, duplicates another or sits outside your expertise, merge or remove it before adding new ones. Google’s guidance treats mass content on topics you wouldn’t normally cover as a warning sign, so a smaller, sharper map is often the better one.

What Are the Common Topical Map Mistakes?

The usual mistakes are mapping topics you know nothing about, creating thin pages to fill gaps, and never revisiting the plan.

Mistakes in planning

• Chasing breadth over depth. A map of 300 shallow pages is weaker than 40 good ones.
• One page per keyword. Slight variations of the same query rarely deserve separate pages.
• Mapping subjects you can’t speak on. Google’s guidance warns against entering a niche mainly for traffic.
• Ignoring existing pages. Audit what you have before adding anything.

Mistakes in delivery

• Skipping the links. A map that isn’t reflected in internal links is just a spreadsheet.
• Writing to a word count. Google says it has no preferred word count, so let each page be as long as the intent needs.
• Treating authority as a score. You can’t measure it directly, so judge the map by the pages in it.

Ready to turn your map into content that ranks? See our content marketing service.